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Four 6.5 kg spheres are located at the corners of a square of side 0.80 m. Calculate the magnitude and direction of the total gravitational force exerted on one sphere by the other three.
You are on a bridge which is a height 30m above the water. You first drop a ball and then 1.5 seconds later throw a second ball down so that both balls hit the water at the same time.
Two identical 10 g iron springs, except that one has been wound using work W, are dropped into equal volumes of 15M HC1 in two identical constant volume calorimeters, that are adiabatically insulated. The HC1 will dissolve iron springs. What differen..
Compute the average acceleration of car and lizard and the final velocity of a Ferrari.
A father and a daughter balance a teeter-totter to illustrate the principle of the lever. If the father whose weight is 150 N is 8 m from one end, how far away on the opposite side of the fulcrum should the 50-N daughter stand to balance the teeter-t..
The spring of the pressure gauge has a force constant of1000 n/m and the piston has a diameter of 2.00 cm as the gauge is lowered into water, what change in depth causes piston to move in by 0.50 cm.
An air conditioner is used to keep the interior of a house at a temperature of 25C while the outside temperature is 34C a)If heat leaks into the house at the rate of 11kW, and the air conditioner has the efficiency of a Carnot engine, what is the ..
A proton starting from rest is accelerated in a cyclotron to a speed of 3.0•106 m/s. Find the work done on a proton by the electrical force of the cyclotron.
A free electron and a free proton are placed in an identical electric field. which of the following statement are true?
An object has a charge of -4.3 ?C. How many electrons must be removed so that the charge becomes +2.8 C?
Two tug boats are towing a ship. Each exerts a horizontal force of 5 tons and the angle between their towropes is 90 degrees. What net force is exerted on the ship?
Light is an electromagnetic wave and travels at a speed of 3.00 x 10^8 m/s. The human eye is most sensitive to yellow-green light, that has a wavelength of 5.45 x 10^-7m. How you find the frequency of this light.
Imagine that plane reaches the necessary takeoff velocity
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